There's nothing more exciting than the opening night of a hit Broadway musical, except maybe what happens getting there. While Wicked and The Lion King pack audiences in on the Great White Way, Julia and Tom, a successful songwriting team played by Debra Messing and Christian Borle, begin work on a new musical based on the life of Marilyn Monroe. When a tenacious producer (Anjelica Houston) jumps aboard, so begins the difficult task of casting the silver screen icon. Ivy Lynn, a tough Broadway veteran, seems like the obvious choice. But enter Karen Cartwright (Katharine McPhee), a young girl from Iowa with a dream of making it on Broadway who walks in and blows everyone away. So who will get the part and begin a journey that will change their lives? It's an age-old story, but a star just might be born once again. This will be a rollercoaster ride that culminates on opening night when the audience gets to determine whether or not the show is a smash!